“Study the Contrast of Thermal Expansion Behavior of the Unsaturated Polyester resin (UP) containing Phenolic Bakelite(PF) By Using The Thermomechanical Analysis Technique(TMA)”, IHJPAS, vol. 28, no. 2, pp. 327–336, Apr. 2017, Accessed: May 03, 2024. [Online]. Available: https://jih.uobaghdad.edu.iq/index.php/j/article/view/241